Is the previous generation Madone still relevant?

I'm looking at 2009 Trek Madone 5.2 and have been offered a great deal on it...I've been out of the road biking game for so long and honestly do not have as much time as I do to rest ride everything out there. Has the bike game changed a lot in recent years? Is the OCLV Black carbon still very relevant and the DA 7800 gruppo still decent? Thanks in advance and any experience you guys can share... I'm coming from a Cervelo Soloist Team